Yeah, I had this fun experience to.
Althought i just threw mine on the ground without thinking.
(Actually I may have sprayed the socket with Corrosion X, not sure)
Then one started shorting and blowing fuses. Took me about 4 fuses to figure that out. (Ugg should have know better, but it was late and I had been working hard all day.)
Mine are now saturated in Corrosion X and very well wrapped in electrical tape.
(Actually, at the end of that long night, i had cut the bad socket off, and spliced in a new one (my only spare) just to look down and realize i forgot to put the freakin endcap on the PVC. ERRRRRRR...... I proceeded to just wrap the entire end in very heavy duty duct tape, covered with electrical tape, and a couple dabs of liquid electrical tape.)
Good enough for this year.
My RGB Tree has now made it thru 2 nights of decent rain and its still working fine.
Hoping all my issues are gone now.
That said, a small design suggestion would be to add a power indicator LED after the fuse, for each output.
Also, since these fuses don't always seem to blow fast enough, and they are soldiered to the board...
What if.
2 of the small standard 3 amp fuses that come in incan strings were used.
I know, I have hundreds of them lying around with nothing to do with them.
Just a couple thoughts.